So I came across this random tip today that suggested getting some easy exercise in is to switch out your chair (work chair or whatever one you sit in most commonly) to an exercise ball.
I kind of want to do this! I do a LOT of sitting. Do you guys think it'd be worth doing, or too much pain and not enough reward, or that there'd be no reward? I'd miss having a backrest, probably, but it'd be pretty fun sitting on a ball too